If a +b+c = 0 then the value of a²+b²+c²/bc+ca+ab

pls solve and give the explanation​

Step-by-step explanation:

if:

a + b + c = 0

then we can rewrite:

c = -a - b

Now we can replace this in our expression:

Now we can rewrite:

(-a - b)^2 = a^2 + 2*a*b + b^2

Then we can rewrite our expression as:

Let's keep simplifying this:

Here is easy to see the simplification we need to do, as we have the same factor in the denominator as in the numerator (just a different of sign).

Then the expression is equal to -2

show us the graphs dude

step-by-step explanation: